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- Cores: 20
- TDP: 45-55 W (configurable)
- Transistor size: 3 nm
Expert Verdict
A high-end Intel Core Ultra 7 255HX processor with strong single-core performance (85/100), excellent power efficiency. Suited for demanding workloads.
Review
Single-Core Performance
85
Multi-Core Performance
69
Power Efficiency
75
Integrated Graphics
51
QucikComparison Final Score
76
Pros
- Excellent single-core performance
- Capable multi-core performance
- Great power efficiency
- High core count (20 cores)
- Capable integrated graphics
Cons
- No significant drawbacks for its tier
Compare Intel Core Ultra 7 255HX with other products
Full Specifications
Cinebench
Reputable cross-platform benchmark for high-performance processors
| Cinebench 2024 (Single) | 131 |
|---|---|
| Cinebench 2024 (Multi) | 1820 |
GeekBench v6
| Geekbench 6 (Single-Core) | 2989 |
|---|---|
| Geekbench 6 (Multi-Core) | 15924 |
| File compression | 1140 MB/sec |
| Clang compilation | 149.8 Klines/sec |
| HTML 5 Browser | 312.2 pages/sec |
| PDF Renderer | 423.9 Mpixels/sec |
| Text processing | 335.6 pages/sec |
| Background blur | 64.1 images/sec |
| Photo processing | 111.8 images/sec |
| Ray tracing | 31.1 Mpixels/sec |
PassMark
Synthetic test that focuses on raw computational performance for low-level functions
| Passmark CPU (Single-Core) | 4582 |
|---|---|
| Passmark CPU (Multi-Core) | 49000 |
| Integer math | 128.6 GOps/sec |
| Floating point math | 163.3 GOps/sec |
| Find prime numbers | 404M Primes/sec |
| Random string sorting | 63.8M Strings/sec |
| Data encryption | 40.2 GBytes/sec |
| Data compression | 524.6 MBytes/sec |
| Physics | 2996 Frames/sec |
| Extended instructions | 42.1B Matrices/sec |
Blender
3D rendering test that measures CPU performance in 3D modeling tasks (uses all cores)
Performance Per Watt
Shows the score you get per each watt of PL1 TDP
| Cinebench 2024 / Watt | 33.1 PPW |
|---|---|
| Geekbench 6 Multi / Watt | 289.5 PPW |
| Passmark CPU Mark / Watt | 890.9 PPW |
| Blender / Watt | 7.11 PPW |
General
| Vendor | Intel |
|---|---|
| Released | 6-Jan-25 |
| Type | Laptop |
| Instruction Set | x86-64 |
| Codename | Arrow Lake |
| Model number | 255HX |
| Integrated GPU | Arc Graphics (4-Cores) |
| Qualcomm Equivalent | — |
CPU
| Performance Cores | |
| P-Cores | 8 |
|---|---|
| P-Threads | 8 |
| Base Frequency (P) | 2.4 GHz |
| Efficient Cores | |
| E-Cores | 12 |
| E-Threads | 12 |
| Base Frequency (E) | 1.8 GHz |
| Total | |
| Total Cores | 20 |
| Total Threads | 20 |
| Multiplier | 24x |
| L1 Cache | 192K (per core) |
| L2 Cache | 2MB (per core) |
| Unlocked Multiplier | Yes |
Package
| Transistors | — |
|---|---|
| Fabrication Process | 3 nm |
| TDP (PL1) | 45-55 W (configurable) |
| Socket | FCBGA-2114 |
| Peak Temperature | 105°C |
iGPU
| Integrated Graphics | Arc Graphics (4-Cores) |
|---|---|
| GPU Boost Clock | 1850 MHz |
| Shading Units | 512 |
| TMUs | 32 |
| ROPs | 16 |
| Execution Units | 64 |
| iGPU FLOPS | 1.9 TFLOPS |
Memory Support
| Memory Types | -6400 |
|---|---|
| Max. Memory Size | 256 GB |
| Memory Channels | 2 |
| Max. Memory Bandwidth | — |
| ECC Support | Yes |
